Engine stumbles when switching tunes?
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Laughing Gas
Joined: Apr 2011
Posts: 851
Likes: 14
Engine stumbles when switching tunes?
Have a DP Tuner, was running in 1200 high idle today, returned it to stock, and then switched to 60e with engine idling. Well today the idle started stumbling around after the tune was switched. Going back and forth between tunes it consistently happens. Didn't used to do this. Going between stock and 60e now moves the idle 50 to 70 rpms
Also when high idling I now have an intermittent shake, like the engine moves, shimmies through the truck, back to normal, then rinse and repeat.
Also when high idling I now have an intermittent shake, like the engine moves, shimmies through the truck, back to normal, then rinse and repeat.
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Joined: Mar 2005
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From: Hoschton,GA
This could be a multitude of things going on. First thing to do is uninstall the chip an drive it stock for a while to see if you can replicate the situation.
If this does not happen with the chip out go to our site and create a help desk ticket describing what is going on and send the chip, switch and cable back to be inspected. Jody has some people send their PCM in as well so he can see how they have been cleaned. If too much copper is showing he can re-tin it for you while he has it here.
Diane
If this does not happen with the chip out go to our site and create a help desk ticket describing what is going on and send the chip, switch and cable back to be inspected. Jody has some people send their PCM in as well so he can see how they have been cleaned. If too much copper is showing he can re-tin it for you while he has it here.
Diane
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Jody & Diane Tipton- DP-Tuner®
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Custom tuning for 7.3l, 6.0l, 6.4l,6.7l, Ecoboost,
Get Tuned! 828-221-0076 ext. 802
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Thread Starter
|
Laughing Gas
Joined: Apr 2011
Posts: 851
Likes: 14
This could be a multitude of things going on. First thing to do is uninstall the chip an drive it stock for a while to see if you can replicate the situation.
If this does not happen with the chip out go to our site and create a help desk ticket describing what is going on and send the chip, switch and cable back to be inspected. Jody has some people send their PCM in as well so he can see how they have been cleaned. If too much copper is showing he can re-tin it for you while he has it here.
Diane
If this does not happen with the chip out go to our site and create a help desk ticket describing what is going on and send the chip, switch and cable back to be inspected. Jody has some people send their PCM in as well so he can see how they have been cleaned. If too much copper is showing he can re-tin it for you while he has it here.
Diane
I cleaned the PCM well but was very careful not to get down to the copper. Also sending the PCM would be impossible as this is my only vehicle....
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Joined: Mar 2005
Posts: 1,863
Likes: 19
From: Hoschton,GA
It would not be possible to replicate the situation with the chip removed because it only happens when changing tunes. Didn't use to do this but I've only had the chip for a couple weeks. After it stumbles the idle catches itself and appears normal.
I cleaned the PCM well but was very careful not to get down to the copper. Also sending the PCM would be impossible as this is my only vehicle....
I cleaned the PCM well but was very careful not to get down to the copper. Also sending the PCM would be impossible as this is my only vehicle....
Ok let try this... Did the check engine light come on after the stumble? Typically it will. If it did you will need to pull that code and let us know what it is? From there we can usually pinpoint what is going on.
Our chip connectors fit tight to the J3 port so if any silicone is left behind it could be inferring with the J3 to chip connection. Stumbling could be from anything. Anything from a failing CPS to air in the fuel can cause a stumble. It is also a sign of a poor J3 to chip connection. Although you are certain you cleaned it well I would just look again to rule that out.
If none of these ideas work send it back to Jody so it can be inspected.
Diane
__________________
Jody & Diane Tipton- DP-Tuner®
FTE Legacy Sponsors since 2006
Custom tuning for 7.3l, 6.0l, 6.4l,6.7l, Ecoboost,
Get Tuned! 828-221-0076 ext. 802
Become our Facebook Fan
Jody & Diane Tipton- DP-Tuner®
FTE Legacy Sponsors since 2006
Custom tuning for 7.3l, 6.0l, 6.4l,6.7l, Ecoboost,
Get Tuned! 828-221-0076 ext. 802
Become our Facebook Fan
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